Solving Technical Challenges in Building a Liquid Fluoride Thorium Reactor. Many were solved in the 1960s, building the Molten Salt Reactor Experiment. Others have been solved since then. We still need to make engineering decisions, and test materials.

High Inherent Safety - No water, no high pressure, nothing that could propel radioactive materials into the environment. Thermal expansion/contraction of molten fuel salt strongly regulates fission rate; MSR is a very stable reactor. Simple safety systems work even if no electricity or operators.

Easy Construction and Siting - Low pressure operation, so no high-pressure safety systems. No water, so no steam containment building. Reactor factory assembled, with modern quality control, sensors and communication.